Facebook is testing out "save-for-later" feature for the second time, hinting at adding it permanently this time. The feature allows users to save the content of a link so it can be read later.

Facebook, the largest social networking site in the world, is reportedly testing a new feature for its site, which allows users to save content for later reading. This aims at generating more news-reading hours spent on the social network than it already hosts. The "save-for-later" feature will allow users to save links within Facebook to a new list, which can be accessed later. Facebook is testing the feature with a limited number of mobile users.

The feature is not a brand new idea on Facebook's end; in fact a similar function has long been available on Instapaper and Pocket. Facebook itself had tested the first iteration of the feature last year, but due to its less-than-friendly interface the feature did not make it to a wider audience. But this time, it seems the feature has been built from the ground and works more efficiently.

The latest addition was first spotted by tech blog MyTechSkool and later confirmed by AllThingsD. The feature, according to the mobile screenshots, displays a small iBook-like bookmark button attached to each story shared on the News Feed section. By tapping or clicking the icon, the actual content of the article, not the post, gets saved for later reading. Users can access the content from a newly-appeared "Saved" menu under Facebook apps.

"We're constantly testing new features, but we have nothing further to share at this time," a Facebook spokesperson told AllThingsD.

The new feature backs Facebooks CEO Mark Zuckerberg's recent words at an event earlier this year. "We want to give everyone in the world the best personalized newspaper in the world," he told AllThingsD at the time.